** Shares of U.S. regional banks slide after investor anxiety shot up over tensions over tariff imposition
** Regional banks such as Fifth Third Bancorp FITB.O, M&T Bank MTB.N, Keycorp KEY.N and Comerica CMA.N fall; Western Alliance WAL.N leads declines with a ~5% fall
** The world's second largest economy China, would impose additional tariffs of 84% on all U.S. goods from April 10, up from the 34% previously announced
** As hopes of concessions faded and tariffs on dozens of countries, including a massive 104% duties on Chinese goods, came into force, investors accelerated their exit from stocks and industrial commodities
(Reporting by Jaiveer Singh Shekhawat in Bengaluru)
((JaiveerSingh.Shekhawat@thomsonreuters.com;))